NHL.com also reports that the center has spent time in the hospital since the end of the season due to his injuries.

Boston Bruins general manager Peter Chiarelli told reporters Wednesday that center Patrice Bergeron was absent from the team's end-of-season breakup day Wednesday at TD Garden because he was at a local hospital for observation for a slight puncture of his lung.

---End of Update---

UPDATE: Monday, June 24, at 11:45 p.m. ET by Eric Ball

After his team's stunning Game 6 loss, Bergeron revealed to Joe Haggerty of CSNNE what exactly was ailing him. The list is a dozy:

Patrice Bergeron said after gm he was playing w/broken rib, torn rib cartilege and he separated shoulder during Game 6 #BruinsTalk#Warrior

"Let's just say right now we're going to give him a little bit of time," Boston coach Claude Julien said to NBC's Pierre McGuire during a second-period on-camera interview, via NHL.com.

The injury couldn't come at a worse time for Boston. Bergeron has scored four goals in the Stanley Cup Final. With the Bruins now down 3-2 in the series, losing him could prove fatal for the Bruins. The Boston Globe's Kevin Paul Dupont doesn't like the Bruins' chances if they can't rely on Bergeron.

During the regular season, he was third on the team in points, with 32. The 27-year-old center had 10 goals and 22 assists.

This is definitely a situation that will need to be monitored as it unfolds. It's still unclear what Bergeron's injury is and for how long he'll be out. Right now, his return to the Final appears to be questionable at best.